Figure 1. Inhibition curves of PLA₂ activity of C. d. terrificus venom by the blood plasma of Boa constrictor (white dots). The blood plasma of C. d. terrificus was used as reference (black dots). Curve equations: y = (-1.112 ± 0.1075)x + (17.22 ± 0.3193) for B. constrictor and y = (-2.307 ± 0.1498)x + (17.45 ± 0.4478) for C. d. terrificus, with determination coefficient (R²) of 0.9145 and 0.9546, respectively. The 95% confidence intervals of the best fit curves are indicated by dashed lines.